Finding the Fourth Proportional to 2,836,220.84, 3,915,430.08 and 2,190,190.76
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Solution
The fourth proportional to 2,836,220.84, 3,915,430.08 and 2,190,190.76 is: 3,023,579.36
Step by Step Solution
- Step 1: Write the proportion equation
2,836,220.84 : 3,915,430.08 = 2,190,190.76 : x - Step 2: Convert to fraction form
2,836,220.84/3,915,430.08 = 2,190,190.76/x - Step 3: Cross multiply
2,836,220.84x = 3,915,430.08 × 2,190,190.76 - Step 4: Simplify right side
2,836,220.84x = 8,575,538,782,642.06 - Step 5: Solve for x
x = 8,575,538,782,642.06/2,836,220.84 - Step 6: Final answer
x = 3,023,579.36
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.